TC/ manual lock Question
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From: Jonestown PA
TC/ manual lock Question
I was wondering, I have the manual lock for the TC. When I warm the truck up before I go anywhere it takes forever for the heat to build up to lock the TC. I was wondering if it would hurt anything it I manualy lock the TC when cold? I will not be hamering on it just want to bring the RPM's down on a cold motor when driving so I wont get run over by the " In a hurry people" that follow me.
Post Fiend
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From: White Mnt's,New Hampshire
i had a SP diesel tc lock on my truck..it locked TC every time at a set speed..i set for 32 MPH in the winter for 2 winters..the stock TC did let go...but it had 165k at the time...not sure if the cold played a role in there or not..i did go easy till things had a chance to warm up...
Post Fiend
Joined: Sep 2006
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From: Sioux Falls, SD
I was wondering, I have the manual lock for the TC. When I warm the truck up before I go anywhere it takes forever for the heat to build up to lock the TC. I was wondering if it would hurt anything it I manualy lock the TC when cold? I will not be hamering on it just want to bring the RPM's down on a cold motor when driving so I wont get run over by the " In a hurry people" that follow me.
As far as I know it is a matter of RPM's for the TC. Too low of an RPM and you can do some damage over time. I'm not 100% sure but I believe it is in the neighborhood of 1500 rpm's.
From Forgotton Ford's website:
"First off, you DO NOT want to "lug" your automatic transmission by locking it in first gear at
an idle. The line pressures on the lockup plates are NOT HIGH ENOUGH at idle to hold the lockup
clutch and you will burn up your torque convertor over time. The primary purpose of the TC lock
mod is for TOWING. The TC lock mod, combined with an exhaust brake will allow you to travel down
long grades with minimal use of your service brake. This equates to cooler brakes at the bottom,
and longer brake life.
The TC lock mod is also good for long uphill driving at speeds BELOW lockup speed (about 45mph).
Keeping the Rpms up by using 1st or 2nd gear and locking the TC will allow you to keep tranny temps
down during long uphill (and uphill towing) situations. You should unlock your TC at speeds below
about 25mph or RPMs below 1000 so as to avoid TC damage from low line pressures. "
Post Fiend
Joined: Jun 2006
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From: White Mnt's,New Hampshire
when its down near 0 the tc locks up late as you role out of the drive way,,,,it lets the the trans build up some heat be for it locks...some times if i just drive out of town..its down hill for about 2 miles.....it will shift into OD before the tc locks..
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Post Fiend
Joined: Sep 2006
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From: Sioux Falls, SD
Blaine,
Here is two websites that explain the mod:
Torque Convertor Lock-up mod
Welcome to guzzle's TC Lockup Mod Web Page
Here is two websites that explain the mod:
Torque Convertor Lock-up mod
Welcome to guzzle's TC Lockup Mod Web Page
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Posting Guru
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From: Jonestown PA
Thanks for the replys, I work second shift or I would have been back sooner.
I know the tranny doesn't lock when cold. And with a cold motor I don't want to push the RPM's to high but want to be up to or close to the speed limit. When locking the trans it would be when up to or close to speed there for not putting any strain on parts. I just didn't know if it was a safe thing to do with a cold tranny.
I am talking about a manual lock Vs the ECU locking.
I know the tranny doesn't lock when cold. And with a cold motor I don't want to push the RPM's to high but want to be up to or close to the speed limit. When locking the trans it would be when up to or close to speed there for not putting any strain on parts. I just didn't know if it was a safe thing to do with a cold tranny.
I am talking about a manual lock Vs the ECU locking.
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
I would not let it lock below 1300 RPM to be sure there is enough pressure to maintain the lockup without slipping.
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From: Jonestown PA
yeah I never lock it below 1500/1800, it just feels like I am luging it to much when cold it I do that.
I did notice though that when its warm out and I lock it manualy and I do get down to 1000/1100 RPM's theres no slipping. But I am only down there for a few seconds.
Thanks for all the advice guy and Rich sorry I am not that best at explaning myself. I guess its something I need to learn.
I did notice though that when its warm out and I lock it manualy and I do get down to 1000/1100 RPM's theres no slipping. But I am only down there for a few seconds.
Thanks for all the advice guy and Rich sorry I am not that best at explaning myself. I guess its something I need to learn.
Post Fiend
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From: Sioux Falls, SD
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From: Boca Raton, FL
Blaine,
Here is two websites that explain the mod:
Torque Convertor Lock-up mod
Welcome to guzzle's TC Lockup Mod Web Page
Here is two websites that explain the mod:
Torque Convertor Lock-up mod
Welcome to guzzle's TC Lockup Mod Web Page
Not to bring back on old thread but the Guzzle method seems awfully involved compared to the one from forgotten.net?? Has anyone had experience with them both and can tell if one is better than the other? Or is the forgotten.net a little too simple and can hurt the tranny or computer?